package com.gmq.mianshi.designModel.observe.observer;

/**
 * @author gmq
 * @email 2628931@qq.com
 * @date 2017/11/27 14:46
 */
public class ConcreteObserver implements Observer {

    @Override
    public void update() {
        System.out.println("收到主题改变的通知");
    }
}
